Teat cup for milking machines



Dec. 11 1923.

C. M. ANDERSON TEAT CUP FOR MILKING MACHINES Filed Aug. ll 1921 .Inv/27'? 07; C. .i/lwderson, by

Atorneg, 7'

Patented Dec. 1K1, 19223.`

UNITED-s rarss .Parent orales.

CHARLES M. annnnsOn, on warnnnoo, town.

TEAT CUP FOREVIILKG ll/lACI-HNES.

Appucationniea august V11, 1921. serial Nalinnes.

To @ZZ whom t may concern:

Be it known that l, Cri/nuns hl. NDER- soN, a citizen of the Allnited States of rimerica, and a resident of Waterloo, Blackhawk County, lowa,.have invented certain new and usetul improvements in Teat Cups for Milking` viachinesfof which the following is a specification.

My invention relates to improvements in teat-cupsfor milking machines, and the object of my improvementis to" so construct the teilt-receiving part of the teatec'up housing terminally as toV adapt it to give the proper configuration to the teat-clasping end ofthe elastic teat-cup, thereby Vto render the action of the machine more efficient preventing injury to or discomfortof the teat.`

This object I have, accomplished by the means which are hereinafter described and claimed, and which are illustrated in the acL coinpanyingvdrawings, ,inV which Figs. ll and 2 are like central longitudinal sect-ions of my improved teat-cup but taken at an angle of 90 degrees apart, and Figure l showing the uncompressed condition of the elastic teat-cup, while Figure 2 shows the compressed condition thereof. Fig. Sis a plan of the teat-receiving end of said device, and Fig. 4 is a fragmentary view, partly in longitudinal section, and partly in elevation,`

with parts broken away, ofthe teat-receiving end of a modified form of the device.

Similar numerals of reference denote corresponding parts throughout the several .views.

My improved teat-cup has the usual lrigid ,tubular housing element l, whose lower or ,discharging end is conically diminished and seated in a cupped part 3 of annular form.V .The numeral 5 denotes a tubular nipple to fit one end of a rubber tube, not shown, leading to the air exhausting mechanism of a milking machine. VThe'inner end 6 of the part 5 is enlarged and flared outwardly, and positioned within the discharging end of a housing l in spaced concentric relation. The

body of the nipple 5, without said housing,

is medially exteriorly threaded to receive a nut l which clamps the cupped element 3 against the end of said housing. The other or teat-receiving end of the housing l is bent or curved inwardlyat 2 for a purpose to be hereinafter explained. j

The numeral 8 denotes the elastic tubular teatereceiving part'of Vthe device which is mounted concentrically within the housing l .with its linner end clamped between the jects beyond the incurved end 2 of the housing l, andvis inverted thereover.

The device so far described will. operate perfectly. l have, however, shown in Figs.

l and 2, a securing cap l0 of cylindrical j form with its upper end` incurved similar to the incurved end 2 of the housing, but

the cap 10 is of larger diameter so asto closely t over and uponthe inverted part 9 of the elastic tube 8,^and frictionally tightly secure thepart 9 in place. To prevent contact of the hard cap l0 with the sensitive udder of the animal, and also give a more yielding and non-,conducting surface at that end of the device, I have mounted over and upon the crap l0 another cap ll of soft rubber and of similar form, but whose upper end is introverted to enter a short distance within the open outer end of the tube 8. This furnishes a soft and elastic cushioning body vsurrounding the junction of the teat with the udder, and prevents much discomfort.

In Fig. d is shown a modification Wherein the housing l has a removable adjustable terminal part 12, which can be adjusted longitudinally to vary the length of the teatcup in case of necessity. This part l2 may be secured on the housing in a longitudi nally adjusted position by any desirable means, as the form shown, is illustrative merely. The part 12 is slotted upwardly longitudinally at 13, and one longitudinal edge of the slot has a number ofrectangular notches le into which a fixed pin l5 on the housing may be received according to the principle of a bayonet-joint.

The incurved upper or ,toet-receiving end 2.of the housing l is particularly necessary and important in the action of the device. This is because the over-arching of the incurved end 2 provides an interspace between the housing and the straight walled tube 8 clear up to the extremity of the housin whereby the action of a vacuum becomes e fective throughout all that part of the length of the tube 8 which acts compressiveH lyupon vtlieteaitv enclosed therein. This will be understood'by referring` to Fig. 2 Where the tube 8 is shown in its position' of compression about a teet,'not`sliown, .and inv which position the-tent is compressed equally throughout its entire length and consequent- @ly completely and naturally stripped vof" milk.

Y Yin'ventior'i and Within thescope of their pro` teotion. Y

'Having described my invention, what l claim 'as new and desire .to secure b'y Letterslatent, is: y

Y 1. A rig'idtubular cylindric tent-cup :hav-

ing vits iopenmteat-receiying end curved domically inwardly andennularly.

2; A rigid tubular cylindric teat-cup body havi'npzef its .tent-receivingend curved inwardly 'dom-ically annularlyY about its lon gi tudi- 1 Y ,.I ,Y V c Y .f

nel axis, and an elastic cylindric tubular bodymounted Withinfsaid teatLcupnvith an end inverted to t domically labout said curved tent-receiving end.

rigid.tubular.,teatcup body having its toet-receiving end curved inwardly -domically-annularly, an elastic cylindric tubular body mounted Within said (eat-cup body with its other end inverted about and fitting said curved end removably, and a rigid tubular cap curved at one end inwardly domically to itvupon the inverted part ofso-id elastic body removably to socure it upon the tent-cup body.

4. In combination, a hollow rigid optan end tent-cup having its upper end contracted inwardly, and an elastic liner of open end tubular shapepositioned within said rigid tent-cup with `itsopen end projecting from and inverted over and to exteriorly fit upon the contracted end of the teat-eup the row tracted 'end of theirigid tent-cup acting as a rigid support for the liner and to supply clearance' under' the contraction to permit pi'ieumatic. action along the full length kof the`liner therebelow upon a contained tout far-as the root of the teat equally.

. `Signed at VVzite'rloo, Iowa, this 8th day of August7 1921.

' VCHARLES M. ANDERSON. 

